Mobil 1 High Mileage 10W-40 Full Synthetic Motor Oil, 5qt: * Advanced full synthetic formula * Excellent overall lubrication and wear protection * Outperforms our conventional high mileage oils * Extra anti-wear additive * Helps to protect critical engine parts in higher mileage engines * Extra cleaning additive * Helps to reduce the sludge and deposits that conventional oils can leave behind * Seal conditioner * Helps to prevent leaks